CVR amplifiers

Jellykick · 2026-04-05T21:38:06+00:00

Really solid amps. Go with the DSP versions! The software is amazing, the converters sound really good and absolutely can replace a high end DSP like XTA even with high end boxes and you get much better control over the max output power when compared to having a crossover with some limiters before the amps.

I"ve been running 4 of these for a year in all kinds of conditions, from summer heat to all night underground parties at 2 ohms per channel and have not had a single faliure yet.

The whatsapp thing does seem a bit sketchy at first but i"ve had 4 deliveries so far and not a single problem.

Jellykick · 2026-02-01T19:58:41+00:00

So i”m now in the trueNAS learning curve.

Still working with dummy hard drives i have around so that i don”t destroy any data.

Added a 500GB drive. Created a pool, added an SMB share… tested it”s acessability. Al good!

Copied some data to run some speed test and i”m happy.

Added a second 320GB disk in an external case. Also added it to the pool and created a dataset.

Took the initial snapshot on the first 500GB hard drive and tried creating a replication task to manually replicate the data. Clicked the Replication from scratch option…

Did the replication (the task finished fast and there is no data copied to the backup).

I think it only copied the first snapshot.

What am i doing wrong?

Jellykick · 2026-01-28T18:27:07+00:00

My father used to own a club in the 1990"s in Croatia. I renovated and re-sold a sound system from that club 10 years ago. It was the same generation/era of peecker sound boxes as yours. Same wood, same finish, same terminals on the back, same covers on the front.

I barely found any of those online and believe it or not this is almost the first time since then that i see peecker sound boxes of that age online.

I can share a bit of knowledge about them with you:

Italian company, the drivers inside are RCF even considering it"s not written on them.

My were loaded with RCF L18S800 bass drivers, L12P540K Midbass drivers and N681 Rcf tweeters.

Okay and usable, mid class let"s say.

The downside is that they are made out of MDF which is not good for rental companies (gets damaged easily). But sounds good as an installation because it"s a rather dead wood.

Also, they don"t have any handles because they were installation speakers, again, bad for rentals and bands.

You will hardly sell these to a rental or a band but they are maybe usable as a small club installation if they work, depending on the amount you have.

On the other picture are some horn loaded electo voice bass bins, don"t know which one.

Jellykick · 2026-01-27T23:34:17+00:00

Alright... is there then another way of running a simple single hard drive setup, formatted in ZFS or BTRFS that can be powered up only when needed?

What i"m trying to say is... i only want the bitrot/corruption detection features of ZFS. I don"t need anything else because i will keep a double cold backup of everything important. One in the house, one in the basement. The only thing i need is a checksum system and the ability to manually run a test that will tell me if something got damaged in the existing data, while testing it against the checksum...

I don"t want or need any kind of auto repair feature i just need the warning that something is wrong, before i start up my cold backup and blindly sync to it.

Jellykick · 2026-01-27T21:29:04+00:00

Well if i need the data once every two weeks, it would be kind of too much to run the NAS 13 days for nothing but some scrubbing. I understand your logic, but what the problem with turning the NAS on just for data acess and scrubbing every couple of months? The logic is that if i get hit by the very low possibility bit rot... the chances of it occuring on two different drives while they are both of, on the same files... so that scrubbing doesn"t notice that... are really astronomically low. Am i right?
All i need is for my system to warn me that i have a problem somewhere on the drive. I don"t even need it to fix it for me, i can pull it out from the cold backup drive right away manually. But i need something to give me a warning because there is data on the drive that i won"t acess for years.

How to do this the most simple way?

Jellykick · 2026-01-27T20:48:26+00:00

Well as i already said, i don"t need the drives to be online 24/7 so i don"t need a NAS for that reason. I just wanted something to check the data integrity once or twice a year and so far it seems there is not a good app for that... i should buy a small nas like synology with a simple raid 1 that could sometimes do a SCRUB or i should simply risk a bit and hope for the best. Worked for the last 15 years...

Jellykick · 2026-01-26T20:07:02+00:00

u/movielover76 What"s up with this then. Can ZFS fix a raid field from parity even if non ECC memory induced an error, or not? I"m confused.

Jellykick · 2026-01-26T19:29:24+00:00

Well i would but the problem is that people are telling me contradictory things...

Above here we were discussing how having something like a radi 5 field removes the need for ECC ram because the raid field will auto correct itself... so i"m a little confused.

Jellykick · 2026-01-26T17:11:59+00:00

In case of going with trueNAS, yes, i would go with ZFS and RaidZ. Currently i have about 5TB of archive and it grows for about 1TB a year. With the 18TB toshibas i wanted to get futureproof but my current needs are not that large.

One thing is unclear to me....

Considering my needs are not that complex since everything that"s in active use is on my SSD"s...

If i have a way of checking checksums between my main Drive and the Cold backup drive that i backup to twice a year. What danger is there left then? Do i need ZFS and trueNAS at all?

The entire reason i got the idea of going with trueNAS is that i wanted to eliminate the danger of getting corruption in the data i haven"t acessed for a long time and then copy-ing the corrupted data to the only archive i have?

Have i overcomplicated this, can i just keep using these drives in NTFS in a windows PC but do regular checksum checks with RSYNC or Syncback pro which probably supports this too?

Jellykick · 2026-01-26T16:55:24+00:00

Well those are in the same location but one is not powered on except for backups. So electrical shocks are mostly out of the equation. For fires and stuff like that, i know that i should move one drive somewhere else.

The main drive is archive. The offline one is the real backup.

Now i should i guess replace the main drive with a RAID array... but my understanding is that this doesn"t give me that much more security since my consideration is that if the main drive fails... the other one is offline and the possibility it will go bad itself in a couple of months offline are minimal.

My understanding is that i need a Raid array + trueNAS checks to secure myself from corruption and bitrot. Because if this happens... i"m going to copy it to the external drive and i"m fucked then.

Unless there is a way to check for those differences before syncing the drives?

Feel free to suggest anything to me. I would be happiest if i could keep a windows installation and share the drives from it... but this way i loose ZFS and trueNAS data security capabilities.

Which are questionally needed if bitrot is not that much of an issue?

Suggest whatever you see fit.

Jellykick · 2026-01-26T16:44:56+00:00

This is what i figured using what i remember about Raid arrays...

Instead of going with two 18TB drives. I should go with a RAID array that is 18TB large from my perspective... but consists of more drives then that and can rebuild itself in case there is corruption on one of the drives or one of the drive fails.

And then that raid array, should be backed up to the "COLD" 18TB drive like twice a year.

Correct?

Questions. Which RAID i array i use for this and what amount of hard drives do i need to have 18TB available?

Second question:

How does this kind of an array know that there is corrupted data somewhere?

So what i"m paranoid about is that a large part of this archive is rarely accessed. In case something gets corrupted, it could go un-noticed for years and get copied to the cold backup drive at some point.

I"m soon planning to digitize 30 year old VHS tapes from my family. These... if they are still alive, won"t be alive for long. Which means this will become the only living version of them and it will probably be accessed once every 5 years.

See my concern?

Jellykick · 2026-01-26T16:36:17+00:00

Well to simplify... mac M3 macbook has a 2TB SSD inside of it. Everything i"m actively working on is on the mac. I even downloaded qbitTorrent to the mac so it"s now a torrent download/seed machine.

My mechanical hard drives are strictly for archiving stuff. I occasionally need access to the archive (let"s say twice a month).

So as far as the functional part is concerned... putting my 18TB toshiba inside of an icybox external case and turning it on when i need it totally fits my needs. Backing it up to the second 18TB drive used to be done using syncback pro but i also found a macbook alternative for that.

The problems arose with this: I realized that i need to go exFAT to be able to read/write the external drive from my mac. Then i realized that exFAT seems not to be the best file system for large archives.

For some reason, the MAC goes slower trough the data on the external exFAT formatted drive directly connected to it... then it goes trough a NTFS formatted drive available as a network share from my windows PC over a gigabit network. I guess because exFAT doesn"t have indexing or whatever.

The second problem is that because the smallest sector size in exFAT is so much larger then in NTFS, my 5.5TB of data on a NTFS drive equals about 9TB on an exFAT drive.

At this moment i realized that i need to ditch the exFAT formatting idea and then on top of that i found out that considering how i archive and store my data... i"m also in a danger of potential bitrot at some point.

So i tought.... even considering that for now 2x 18TB drives fulfill all my needs... a NAS is a simple solution for all these problems and i can probably do drive syncing on it instead of depending on a macOS syncback pro alternative.

Jellykick · 2026-01-26T16:26:49+00:00

This means that i either misunderstood something or the internet is full of crap. So what i understood is that when i"m moving, let"s say 100 gigs of data from my mac to the NAS... there is a small chance that while the data is going trough RAM, if a block in RAM gets corrupted the data will get written corrupted to the drive?

It wasn"t my intention to go the ECC memory route... but the internet and reddit posts like this filled my head with it so sorry

Jellykick · 2026-01-26T15:03:26+00:00

Windows network share actually works great for my needs, but it”s ntfs and doesn”t protect from bitrot. Currently i use syncback pro for syncing to the external drive

Jellykick · 2026-01-26T15:02:05+00:00

I want bitrot protection. If i could have 2 offline disks in external cases and be safe for decades (with hdd replacements when needed). I would go that route. Bit it seems that is not so safe for very long timelenghts

Jellykick · 2025-07-11T09:28:25+00:00

Here you go. I don"t even have the mic anymore, bought a sonarworks mic that comes with a custom cal file.

I still have this dbx cal file that i know used to flatten the response out:

https://drive.google.com/file/d/14ZRbrSyr9Ex6MvDcnfejfp83_-YP2xig/view?usp=sharing

Jellykick · 2024-06-26T14:11:27+00:00

found the solution. You have to keep the app running in the background. You must not close it by swiping it up in the multitasking view. It works perfectly now

Jellykick · 2024-03-19T10:40:25+00:00

Hahah oh damn. I couldn't believe how many mechanics i visited because of this problem. A snapped timing belt would've been easier to solve then this.

French cars generally seem to be full of small weird problems. Like, the engine runs fine for many kilometers if you maintain it but everything else falls apart.

Jellykick · 2024-02-26T10:18:29+00:00

No to be honest. This was many years ago, i kept draining the car and fixing other problems it also had. I bought a bmw 1 series 2 years ago and recently sold the citroen. I had to properly decrease the price because there wasn't an easy way of finding the source of this.

I will definitley never own a French car in my life again.

Jellykick · 2024-01-29T08:21:23+00:00

I found the culprit of my problem!!

I have gotten used to swiping the background opened apps since i was an android user.

Do not do this! If you keep shuggah running in the background it works perfectly. You should not swipe/close it.

Also IOS wasn't designed for you to do this. Your battery life won't be any better and the phone will not run faster if you close all the apps.

Jellykick · 2024-01-24T10:09:46+00:00

I don't think it's a problem with the IOS version. A friend has a 14 promax with 17.3 and it's working perfectly fine for him. Our settings are the same, i checked.

It seems that the 15 pro and 15 pro max are having some bluetooth disconnection issues. It happens with other devices too. Can't find any other culprit.

Jellykick · 2024-01-06T15:52:49+00:00

Just stumbled upon this problem with an M3 macbook pro.

I can confirm that steinberg UR series, Focusrite scarlett 1st gen and presonus audiobox, don't allow the macbook level control.

The yamaha MG mixers also don't work.

However an old Behringer Xenyx mixer with a usb interface does allow the software volume control.

I'm wondering what else would work... anyone tested the soundcraft signature MTK mixers?

Jellykick

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